Results 171 to 180 of about 556 (226)

An Electromagnetic Cantilever Generator with High-Permeability Magnetic Materials

2018 IEEE 13th Annual International Conference on Nano/Micro Engineered and Molecular Systems (NEMS), 2018
This paper presented an electromagnetic cantilever generator (EMCG) of high energy density with high-permeability magnetic materials for harvesting ambient vibrational energy. We utilized a flexible cantilever connecting with a pair of magnets on the free end, and the coils with high-permeability magnetic materials are set right in front of the magnets.
Jiahong Lin, Huicong Liu, Tao Chen 0009, Zhan Yang 0002, Lining Sun, Yan Peng   +5 more
openaire   +1 more source

Inversion of Multifrequency Electromagnetic Data to a Conductive and Permeable Sphere

Symposium on the Application of Geophysics to Engineering and Environmental Problems 2001, 2001
We have developed an algorithm for inverting broadband electromagnetic (EM) data to determine its electrical conductivity, magnetic permeability, radius, and depth using a sphere model. The algorithm is based on traditional non-linear inverse methods with singular value decomposition.
Haoping Huang, I.J. Won
openaire   +1 more source

The impact of non-linear permeability on electromagnetic stator core tests

7th IET International Conference on Power Electronics, Machines and Drives (PEMD 2014), 2014
Routine electromagnetic testing is used to detect developing faults in the stator cores of large electrical machines. However the non-linear permeability and hysteresis of electrical steel cause the development of harmonics in the magnetic field, potentially affecting fault interpretation.
Bertenshaw, D. R., Smith, A. C.
openaire   +2 more sources

Permeability enhancement of Kv1.2 potassium channel by a terahertz electromagnetic field

The Journal of Chemical Physics, 2023
As biomolecules vibrate and rotate in the terahertz band, the biological effects of terahertz electromagnetic fields have drawn considerable attention from the physiological and medical communities. Ion channels are the basis of biological electrical signals, so studying the effect of terahertz electromagnetic fields on ion channels is significant.
Xiaofei Zhao, Wen Ding, Hongguang Wang, Yize Wang, Yanjiang Liu, Yongdong Li, Chunliang Liu   +6 more
openaire   +2 more sources

Electromagnetic response of a permeable inhomogeneous conducting sphere

Geoexploration, 1973
Abstract Electromagnetic response of a two-layered spherical model to a dipolar field has been calculated considering the simultaneous influences of a permeable conducting cover, magnetic permeability contrast with the surrounding medium, and radial conductivity variation inside the core.
Janardan G. Negi, Chandra P. Gupta, Upendra Raval   +2 more
openaire   +1 more source

Electromagnetic—acoustic evaluation of the permeability of porous media

Acoustical Physics, 2001
The generation of ultrasound in a porous water-saturated medium subjected to rapid electromagnetic heating is considered. The irradiation provides the Joule heating of narrow and electrically high resistive pore throats, which interconnect cavities within the medium and, consequently, determine the permeability of the medium.
Davydov, A. A., Lyamshev, L. M.
openaire   +2 more sources

Electromagnetic Characterization of Hydraulic Fracture Shape and Permeability

Proceedings, 2015
Our numerical proof-of-concept studies demonstrate that surface electric field measurements can provide sensitivity to both the geometric distribution of injected conductive fluids and or conductively enhanced proppant as well as sensitivity to the created hydraulic permeability of the fracture zone.
G.M. Hoversten, M. Commer, C. Schwarzbach, E. Haber   +3 more
openaire   +1 more source

Progress In Interpretation Of Transient Electromagnetic Data In Terms Of Subsurface Permeability

9th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems, 1996
The relative importance of nonpoint-source (NPS) pollution in the degradation of water quality has increased in the last two decades due to the control of pollutant releases from point sources (Sharpley and Meyer 1994). The most important source of NPS pollutants are agriculture and urban areas, which impact water quality in rivers, lakes, estuaries ...
M. E. Everett, C. N. Burden, K. Sananikone, B. E. Herbert   +3 more
openaire   +1 more source

Analysis of Electromagnetic Field on the Permeability Test of Concrete

2012 Asia-Pacific Power and Energy Engineering Conference, 2012
The method of water pressure measuring permeability of concrete has a long test cycle, low efficiency, and doesn't apply to low permeability of concrete. The method based on electricity can overcome these shortcomings. This paper puts forward the method of streaming potential coefficient to measure the permeability of concrete, which is reasonable ...
openaire   +1 more source

Inclusion of Finite Permeability on Design and Optimization of an Electromagnetic Undulator

Chinese Physics Letters, 2014
We derive an alternate analytical expression for the optimum dimensions of an electromagnetic undulator with a finite permeability lamination core. The analytical expressions are compared with earlier results under an infinite permeability approximation of the lamination core of the electromagnetic undulator design.
Vijay Huse, Geetanjali Sharma, Swati Mishra, G. Mishra   +3 more
openaire   +1 more source